Knights. A shounen manga that tells about Mistletian, called 'Mist' for short. In this medieval world, the church and their members burn people en masse on suspicion of witchcraft. Mist and his organization take a stance against the church and the 'Saints' that keep on hunting witches. Because of his appearance, Mist is feared and hated by the village-folk, thus he always wears a mask to disguise himself and going by the moniker 'The Black Knight'. He journeys with Euphemia, a young girl who's an expert in mixing potions and poisons. Together, they save those who are about to be executed on suspicion of witchcraft.